My sisters were twins, and my parents chose to hold one back after kindergarten. They were in different grades from 1st grade on. It was incredibly tough. They have said if they had to do it again, they would have kept them together in the same grade, in the same school.
My sisters sound like they have the same personality as your kids. The introvert had an incredibly tough time all through school without her twin. She always felt inferior because she was held back. She had a hard time making friends without her twin. Just a tough situation. I think they wish they had reached out to more professionals in making the decision and focused more on the social implications rather than the academic issues. Hope this helps.
Good luck.

Keep siblings together. They can be educated together. Only if one is an extreme outliner and can't possibily be educated in the usual setting, should siblings be separated K-12, IMO

Anonymous wrote:OP, I take it your base school doesn't have Level IV?

Correct. It is Title I. The introvert qualifies for Advanced Math, but the teacher says given the mix of kids (handful of L4 math, lots of ESL level III - bright kids with little support at home in some cases), they will not meet the end of year goals for Advanced Math. Dubious whether they will take 7th Grade SOL in 6th Grade at this point.

My DC aren't twins but depending on the activity, they're sometimes in the same age cohort.

Anonymous wrote:

Anonymous wrote:

Anonymous wrote:If there is room at the center school, siblings can be pupil placed.

Only if the school has extra capacity. It is not a guarantee.

Probably why the PP stated "if there is room."

Sorry -- that was me the OP, responding both times. I meant to point out that the school re-evaluates its capacity outside its boundaries each year. So one year there could be capacity for pupil placement, and the next not, which seems potentially more disruptive. Ugh.

OP, I take it your base school doesn't have Level IV?

Anonymous wrote:

Anonymous wrote:If there is room at the center school, siblings can be pupil placed.

Only if the school has extra capacity. It is not a guarantee.

Probably why the PP stated "if there is room."

No way would I do this for twins. It sounds like they are both developing confidently and along the same trajectory and I would never want to send a signal that one is "better" than the other at this age. I would 100 percent keep them both in the base school.

When they get to high school and if one clearly is more STEM oriented than the other and a much better student then I'd be okay with sending one to TJ and another not to TJ assuming one gets in and the other does not but elementary is too young to start tracking them in this way.

If AAP is really important to you I would consider appealing twin b's decision without telling either of them what is going on but you'd have to do this quickly and I'm not sure whether the timing would work out. I guess you could tentatively accept the spot for twin a, appeal twin b and if he gets in send them both. If twin b doesn't get in then decline twin a's spot after accepting it and don't mention any of this to either of them.

Anonymous wrote:

Anonymous wrote:If there is room at the center school, siblings can be pupil placed.

Only if the school has extra capacity. It is not a guarantee.

Also not a guarantee that the pupil placed child can remain there. It is dependent on the capacity from year to year according to teachers and neighbor who pupil placed their child.

Anonymous wrote:If there is room at the center school, siblings can be pupil placed.

Only if the school has extra capacity. It is not a guarantee.

Anonymous wrote:Can you give some more details - what grade are these kids in? Decisions haven't come out yet so I don't understand how one didn't get in and the other is in pool.

In pool letters did come out, but final decisions have not been made. Do you have experience splitting up twins or kids very close in age?

If there is room at the center school, siblings can be pupil placed.

Sounds like introvert kid is in 3rd grade now because did not get into AAP, and extrovert kid is in pool now so in 2nd grade now. So it is a splitting up kids question.

Like pp, I don't understand exactly - are you assuming one will get in and one won't? You could just keep them both at immersion school if you are worried about self-esteem.

Can you give some more details - what grade are these kids in? Decisions haven't come out yet so I don't understand how one didn't get in and the other is in pool.

Wondering how your kids fared emotionally. I have one introvert who is always described as very bright, haviving excellent self-control and very emotionally intelligent for age. He got 2 fewer questions right on CoGAT than extroverted brother, and a 12 GBRS but didn't get in AAP with referral. The extrovert IS always described as very smart and well-behaved. He's in-pool and has an ear for languages. I know the introvert would do well in AAP, but that doesn't seem to be in the cards for him, and losing his brother at this age would crush him. Six closest friends moved or went to AAP in the last year. AAP school requires a bus ride, and the base is a block away, so they walk home together now.

Looking for others who have BTDT in regards to splitting up twins (or kids close in age 9-18 mos apart, who are often described as virtual twins).